Gas leak location estimating device, gas leak location estimating system, gas leak location estimating method and gas leak location estimating program

Abstract

A gas leak location estimating device includes: an information processor which acquires image information on a plurality of frames from an infrared camera, the information processor being capable of executing: a block discrimination processing of dividing an image area of each of the frames into a plurality of blocks and discriminating whether each of the blocks is a gas area; a count processing of counting a number of times each of the blocks is discriminated as the gas area, over the frames in chronological order, in the block discrimination processing; and a leak location estimation processing of setting, among the blocks, a block whose counted value obtained in the count processing is equal to or larger than a predetermined value as an estimated gas leak location.

1 . A gas leak location estimating device comprising:
 an information processor which acquires image information on a plurality of frames from an infrared camera, the information processor being capable of executing:
 a block discrimination processing of dividing an image area of each of the frames into a plurality of blocks and discriminating whether each of the blocks is a gas area; 
 a count processing of counting a number of times each of the blocks is discriminated as the gas area, over the frames in chronological order, in the block discrimination processing; and 
 a leak location estimation processing of setting, among the blocks, a block whose counted value obtained in the count processing is equal to or larger than a predetermined value as an estimated gas leak location. 
   
     
     
         2 . The gas leak location estimating device of  claim 1 , wherein the information processor repeats the leak location estimation processing a predetermined number of times, and terminates the leak location estimation processing when the block set as the estimated gas leak location remains unchanged. 
     
     
         3 . The gas leak location estimating device of  claim 1 , wherein the information processor is capable of further executing:
 a preset candidate selection processing of referring to a plurality of leak location candidates set in advance by specifying one or more positions in each of the frames, and selecting, among the leak location candidates, a leak location candidate closest to the block set in the leak position estimation processing.   
     
     
         4 . A gas leak location estimating system comprising:
 the gas leak location estimating device of  claim 1 ; and   an infrared camera which has an imaging range containing a monitoring target and sends the image information to the information processor.   
     
     
         5 . A gas leak location estimating method acquiring image information on a plurality of frames from an infrared camera, the method comprising:
 a block discrimination processing of dividing an image area of each of the frames into a plurality of blocks and discriminating whether each of the blocks is a gas area;   a count processing of counting a number of times each of the blocks is discriminated as the gas area, over the frames in chronological order, in the block discrimination processing; and   a leak location estimation processing of setting, among the blocks, a block whose counted value obtained in the count processing is equal to or larger than a predetermined value as an estimated gas leak location.   
     
     
         6 . The gas leak location estimating method of  claim 5 , wherein the leak location estimation processing is repeated a predetermined number of times, and the leak location estimation processing is terminated when the block set as the estimated gas leak location remains unchanged. 
     
     
         7 . The gas leak location estimating method of  claim 5 , further comprising:
 a preset candidate selection processing of referring to a plurality of leak location candidates set in advance by specifying one or more positions in each of the frames, and selecting, among the leak location candidates, a leak location candidate closest to the block set in the leak position estimation processing.   
     
     
         8 . A non-transitory recording medium storing a computer readable program causing a computer which acquires image information on a plurality of frames from an infrared camera, to execute:
 a block discrimination processing of dividing an image area of each of the frames into a plurality of blocks and discriminating whether each of the blocks is a gas area;   a count processing of counting a number of times each of the blocks is discriminated as the gas area, over the frames in chronological order, in the block discrimination processing; and   a leak location estimation processing of setting, among the blocks, a block whose counted value obtained in the count processing is equal to or larger than a predetermined value as an estimated gas leak location.   
     
     
         9 . The non-transitory recording medium of  claim 8  causing the computer to further execute:
 a process of repeating the leak location estimation processing a predetermined number of times and terminating the leak location estimation processing when the block set as the estimated gas leak location remains unchanged. 
 
     
     
         10 . The non-transitory recording medium of  claim 8  causing the computer to further execute:
 a preset candidate selection processing of referring to a plurality of leak location candidates set in advance by specifying one or more positions in each of the frames, and selecting, among the leak location candidates, a leak location candidate closest to the block set in the leak position estimation processing.